It seems some users have been able to send emails from their @me.com emails.

For instance, if your .Mac account name is username, sending an email to username@me.comworks the same as sending one to username@mac.com.

I’ve tried to send myself an email to my “future” @me.com email address but it didn’t work.
If you’re too impatient you still can watch the guided tour here you can also sign up at Apple’s MobileMe site to be notified as soon as the service becomes available.

Posted in dotmac & MobileMe